MD History/Downloads: convert .bind(this) and function property values to use =>

chrome/browser/resources/md_history/history_list_behavior.js

Index: chrome/browser/resources/md_history/history_list_behavior.js
diff --git a/chrome/browser/resources/md_history/history_list_behavior.js b/chrome/browser/resources/md_history/history_list_behavior.js
index b5f5b5c42aa8bba5db694a6788073a351b086caf..474c86bb0599d8bba965b72de0a14ce6e610b3d9 100644
--- a/chrome/browser/resources/md_history/history_list_behavior.js
+++ b/chrome/browser/resources/md_history/history_list_behavior.js
@@ -35,7 +35,7 @@ var HistoryListBehavior = {
      */
     selectedPaths: {
       type: Object,
-      value: /** @return {!Set<string>} */ function() { return new Set(); }
+      value: /** @return {!Set<string>} */ () => new Set(),
     },
 
     lastSelectedPath: String,
@@ -79,10 +79,7 @@ var HistoryListBehavior = {
    * Deselect each item in |selectedPaths|.
    */
   unselectAllItems: function() {
-    this.selectedPaths.forEach(function(path) {
-      this.set(path + '.selected', false);
-    }.bind(this));
-
+    this.selectedPaths.forEach(path => this.set(path + '.selected', false));
     this.selectedPaths.clear();
   },
 
@@ -94,16 +91,14 @@ var HistoryListBehavior = {
    */
   deleteSelected: function() {
     var toBeRemoved =
-        Array.from(this.selectedPaths.values()).map(function(path) {
-          return this.get(path);
-        }.bind(this));
+        Array.from(this.selectedPaths.values()).map(path => this.get(path));
 
     md_history.BrowserService.getInstance()
         .deleteItems(toBeRemoved)
-        .then(function() {
+        .then(() => {
           this.removeItemsByPath(Array.from(this.selectedPaths));
           this.fire('unselect-all');
-        }.bind(this));
+        });
   },
 
   /**
@@ -171,7 +166,7 @@ var HistoryListBehavior = {
     var splices = [];
 
     node.indexes.sort(function(a, b) { return b - a; });
-    node.indexes.forEach(function(index) {
+    node.indexes.forEach(index => {
       if (node.leaf || this.removeItemsBeneathNode_(node.children[index])) {
         var item = array.splice(index, 1)[0];
         splices.push({
@@ -182,7 +177,7 @@ var HistoryListBehavior = {
           type: 'splice'
         });
       }
-    }.bind(this));
+    });
 
     if (array.length == 0 && node.currentPath.indexOf('.') != -1)
       return true;
@@ -224,7 +219,7 @@ var HistoryListBehavior = {
 
     var selected = !this.selectedPaths.has(item.path);
 
-    paths.forEach(function(path) {
+    paths.forEach(path => {
       this.set(path + '.selected', selected);
 
       if (selected) {
@@ -233,7 +228,7 @@ var HistoryListBehavior = {
       }
 
       this.selectedPaths.delete(path);
-    }.bind(this));
+    });
 
     this.lastSelectedPath = itemPath;
   },